Lincoln Electric SPIRIT II 275 Technical Manual page 64

Section 5: Torch Consumables and Cutting Charts
To remove the torch head, turn the attachment ring to the LEFT.
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non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
YES
O-ring
There is no
gap between
o-ring and
attachment
ring
5-2
NO!
O-ring
Gap is visible
between
o-ring and
attachment
ring
Spirit II User's Manual
Torch Base
Torch Head